Speed Signal Circuit [12/2013 - 11/2015]: Procedure

1. Disconnect the F22 combination meter assembly connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Combination Meter Assembly)

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   F22-3 (+S) - Body ground	Ignition switch ON	4.5 to 14 V

   HINT: 

   If any of the ECUs specified in the wiring diagram supplies power to the combination meter assembly, the combination meter assembly will output a waveform.

Result: 

NG 

See step  5

Result: 

OK 

See step  2

1. Disconnect the A47 brake actuator assembly (skid control ECU) connector.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Front view of wire harness connector (to Brake Actuator Assembly (Skid Control ECU))

2. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A47-11 (SP1) - Body ground	Ignition switch ON	11 to 14 V

Result: 

NG 

See step  4

Result: 

OK 

See step  3

1. Check the input waveform.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   *a	Component with harness connected (Combination Meter Assembly)

   1. Remove the combination meter assembly with the connector(s) still connected.
   2. Connect an oscilloscope to terminal F22-4 (SI) and body ground.
   3. Turn the ignition switch to ON.
   4. Turn a wheel slowly.
   5. Check the signal waveform according to the condition(s) in the table below.

      Item	Condition
      Tool setting	5 V/DIV., 20 ms./DIV.
      Vehicle condition	Ignition switch ON, wheel being rotated

      OK

      The waveform is similar to that shown in the illustration.

      HINT: 

      When the system is functioning normally, one wheel revolution generates 4 pulses. As the vehicle speed increases, the width indicated by (A) in the illustration narrows.

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2013 - ] 

Result: 

NG 

REPLACE BRAKE ACTUATOR ASSEMBLY (SKID CONTROL ECU ASSEMBLY). Refer to  REMOVAL [12/2013 - 11/2016] 

1. Disconnect the F22 combination meter assembly connector.
2. Disconnect the A47 brake actuator assembly (skid control ECU assembly) connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F22-4 (SI) - A47-11 (SP1)	Always	Below 1 Ω
   F22-4 (SI) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE COMBINATION METER ASSEMBLY. Refer to  REMOVAL [12/2013 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the F22 combination meter assembly connector.
2. Disconnect the F95 No. 4 junction connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F22-3 (+S) - F95-22	Always	Below 1 Ω
   F22-3 (+S) - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  6

1. Inspect for a short in the wire harness and connectors connected to the No. 4 junction connector shown in the wiring diagram.

   HINT: 

   If voltage is not present, it is possible that an ECU or circuit has a malfunction. The malfunctioning ECU or circuit will be diagnosed in the following steps.

2. Disconnect the F94 No. 4 junction connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   F94-12 - Body ground	Ignition switch ON	4.5 to 14 V
   F94-13 - Body ground*1	Ignition switch ON	4.5 to 14 V
   F94-14 - Body ground*2	Ignition switch ON	4.5 to 14 V
   F95-20 - Body ground*3	Ignition switch ON	4.5 to 14 V
   F95-21 - Body ground	Ignition switch ON	4.5 to 14 V

   • *1: for 12 Speakers

     *2: w/ Manual (SOS) Switch

     *3: w/ Smart Key System

   Result	Proceed to
   Voltage is not present in one circuit.	A
   Voltage is present in all of the circuits.	B

Result: 

B 

REPLACE NO. 4 JUNCTION CONNECTOR 

Result: 

A 

See step  7

1. Select the circuit for which voltage was not present in step 6.

   Result	System that uses the circuit	Proceed to
   F94-12 - Body ground	Audio and visual system*1 or Navigation system*2	A
   F94-13 - Body ground	Navigation system*3	B
   F94-14 - Body ground	Safety connect system*4	C
   F95-20 - Body ground	Smart key system*5	D
   F95-21 - Body ground	SFI system or Automatic transaxle system*6	E

   • *1: for Radio and Display Type

     *2: for Navigation Receiver Type

     *3: for 12 Speakers

     *4: w/ Manual (SOS) Switch

     *5: w/ Smart Key System

     *6: for 2GR-FE

Result: 

B 

See step  9

Result: 

C 

See step  10

Result: 

D 

See step  11

Result: 

E 

See step  12

Result: 

A 

See step  8

1. Disconnect the F71 radio and display receiver assembly*1 or F116 navigation receiver assembly*2 connector.
   • *1: for Radio and Display Type

     *2: for Navigation Receiver Type

2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F71-17 (SPD) - Body ground*1	Always	10 kΩ or higher
   F116-17 (SPD) - Body*2	Always	10 kΩ or higher

   • *1: for Radio and Display Type

     *2: for Navigation Receiver Type

   Result	Proceed to
   OK (for Radio and Display Type)	A
   OK (for Navigation Receiver Type)	B
   NG	C

Result: 

A 

REPLACE RADIO AND DISPLAY RECEIVER ASSEMBLY. Refer to  PROCEDURE - Step 9 

Result: 

B 

REPLACE NAVIGATION RECEIVER ASSEMBLY. Refer to  REMOVAL [12/2013 - ] 

Result: 

C 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the F76 stereo component amplifier assembly connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F76-11 (SPD) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE STEREO COMPONENT AMPLIFIER ASSEMBLY. Refer to  REMOVAL [12/2013 - 11/2016] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the F35 DCM (telematics transceiver) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F35-10 (SPDP) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE DCM (TELEMATICS TRANSCEIVER). Refer to  REMOVAL [12/2013 - 11/2016] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the F13 certification ECU (smart key ECU assembly) connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F13-5 (SPD) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE CERTIFICATION ECU (SMART KEY ECU ASSEMBLY). Refer to  REMOVAL [12/2013 - ] 

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the F95 No. 4 junction connector.
2. Disconnect the A70 No. 1 junction connector.
3. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   F95-21 - A70-10	Always	Below 1 Ω
   F95-21 - Body ground	Always	10 kΩ or higher

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

Result: 

OK 

See step  13

1. Inspect for a short in the wire harness and connectors connected to the No. 1 junction connector shown in the wiring diagram.

   HINT: 

   If voltage is not present, it is possible that an ECU or circuit has a malfunction. The malfunctioning ECU or circuit will be diagnosed in the following steps.

2. Disconnect the A71 No. 1 junction connector.
3. Measure the voltage according to the value(s) in the table below.

   Standard Voltage

   Tester Connection	Condition	Specified Condition
   A71-8 - Body ground	Ignition switch ON	4.5 to 14 V
   A71-9 - Body ground*1	Ignition switch ON	4.5 to 14 V

   • *1: for 2GR-FE

   Result	Proceed to
   Voltage is not present in one circuit.	A
   Voltage is present in all of the circuits.	B

Result: 

B 

REPLACE NO. 1 JUNCTION CONNECTOR 

Result: 

A 

See step  14

1. Select the circuit for which voltage was not present in step 6.

   Result	System that uses the circuit	Proceed to
   A71-8 - Body ground	SFI system	A
   A71-9 - Body ground	Automatic transaxle system*1	B

   • *1: for 2GR-FE

Result: 

B 

See step  16

Result: 

A 

See step  15

1. Disconnect the A43 ECM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   A43-57 - Body ground*1	Always	10 kΩ or higher
   A43-10 - Body ground*2	Always	10 kΩ or higher

   • *1: for 1AR-FE

     *2: for 2GR-FE

Result: 

OK 

REPLACE ECM 

for 1AR-FE: Refer to REMOVAL [12/2013 - ]

for 2GR-FE: Refer to REMOVAL [12/2013 - 11/2016]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR 

1. Disconnect the C3 TCM connector.
2. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   C3-3 (SPD) - Body ground	Always	10 kΩ or higher

Result: 

OK 

REPLACE TCM 

for U660E: Refer to REMOVAL [12/2013 - 11/2016]

for U660F: Refer to REMOVAL [12/2013 - 11/2016]

Result: 

NG 

REPAIR OR REPLACE HARNESS OR CONNECTOR